Imagick::negateImage

(PECL imagick 2.0.0)

Imagick::negateImage — Negates the colors in the reference image

bool Imagick::negateImage ( bool $gray [, int $channel=Imagick::CHANNEL_ALL ] )

Warning

本函数暂无文档，仅有参数列表。

Negates the colors in the reference image. The Grayscale option means that only grayscale values within the image are negated.

gray: Whether to only negate grayscale pixels within the image.
channel: Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Defaults to Imagick::CHANNEL_ALL. Refer to this list of channel constants.

Returns TRUE on success.

Throws ImagickException on error.